多喷嘴对置式水煤浆气化炉内气体浓度分布的常压热态试验研究  

Atmospheric Hot-test on Gas Concentration Distribution in the Opposed Multi-burner Coal Water Slurry Gasifier

作　　者：郭庆华[1] 于广锁[1] 梁钦锋[1] 周志杰[1] 

机构地区：[1]煤气化教育部重点实验室(华东理工大学),上海市徐汇区200237

出　　处：《中国电机工程学报》2009年第32期19-23,共5页Proceedings of the CSEE

基　　金：国家自然科学基金项目(20876048);国家重点基础研究发展计划项目(973计划)(2004CB217703);教育部新世纪优秀人才支持计划(NCET-06-0416);上海市优秀学科带头人计划项目(08XD1401306)~~

摘　　要：多喷嘴对置式水煤浆气化炉内气体浓度的变化与炉内流场分布以及气化反应过程密切相关。采用自行研制的水冷探针及气体预处理系统,对实验室小型四喷嘴气化炉炉膛中主要气体(CO2,CO,H2,O2,CH4和Ar)的体积浓度分布在常压下进行了热态测试。试验结果表明:相同操作条件下沿炉膛轴向和径向气体浓度差异明显,由炉壁至炉膛中心,CO2、O2浓度逐渐增加,CO、H2浓度逐渐降低;喷嘴平面上、下气体组成差别很大,沿气流方向越靠近炉膛出口,这种差异越小。The variation of the gas concentration in the opposed multi-burner （OMB） coal water slurry gasifier is closely related to the flow field distribution and the mechanism of the gasification process. The concentration distributions of major gases （CO2, CO, H2, O2, CH4 and Ar） in an atmospheric bench-scale OMB gasifier were analyzed through the stainless steel water-cooled probes and gas pretreatment system with mass spectrometry. Results show that, the axial and radial profiles of gas concentration are different in the same operation condition. During the measurement process from the inner wall to the gasifier＇s center, the concentration of CO2 and O2 increased gradually, and the concentration of CO and H2 decreased gradually. The most obvious difference of gas concentration occurs at the places above and under the burner plane, along the gas flow direction.

关 键 词：多喷嘴对置式气化炉 煤气化 气体浓度分布 水煤浆 

分 类 号：TQ546[化学工程—煤化学工程]